THE PINKS OF THE ALPS 145 



of the easiest culture. It should be seen in half 

 shade. 



D. atrorubens (All.). An Alpine form of D. Carthusi- 

 anorum, distinguished from the latter by its taller stem 

 of from 19 to 28 inches, its numerous flowers clustered 

 in large heads, and its longer and narrower petals of 

 a very deep red colour. June and July. Eastern and 

 southern Alps. 



D. attenuatus (Sm.). A glaucous plant, with suffru- 

 ticose base ; stems 19 inches high, diffuse, tortuous ; 

 flowers in pairs, small, in lax panicles, pink, inodorous. 

 May and June. Pyrenees, mountains of Spain, and 

 the Atlas. 



D. Balbisii (Ser. non Schur.) is a variety of D. Car- 

 thusianorum y with glaucous leaves. 



D. banaticus (Heuff.). A glaucous plant. Stems 

 10 to 12 inches high, simple; leaves outspread, with 

 recurved edges ; flowers bright rose, rather small, in 

 close heads of from ten to twelve blooms. June and 

 July. Balkans and Banat Mountains. 



D. bicolor (Bieb.). A pretty species, with upright 

 stems 10 to 12 inches high, furnished with broad 

 leaves, and of a rather bluish-green colour, and sur- 

 mounted by one to five flowers, bright rose above and 

 greenish-yellow below, as in D. neglectus. June to 

 September. Caucasus. 



D. blandus (Reich.). This is a variety of D. plu- 

 mariuSy with handsome rose-coloured flowers. 



D. Boissieri (Willk.). A stout plant, with bluish 

 leaves ; stems 12 to 16 inches high, erect, one or two 

 flowered ; leaves thick and narrow ; flowers large, 



